Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating Activities
Net income	$ 630	$ 597
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Net realized capital losses (gains)	(163)	9
Amortization of deferred policy acquisition costs	355	383
Additions to deferred policy acquisition costs	(373)	(356)
Depreciation and amortization	108	116
Gain on sale	0	(62)
Other operating activities, net	37	324
Change in assets and liabilities:
Decrease in reinsurance recoverables	16	19
Decrease in accrued and deferred income taxes	116	122
Increase in insurance liabilities	138	58
Net change in other assets and other liabilities	(585)	(498)
Net cash provided by operating activities	279	712
Proceeds from the sale/maturity/prepayment of:
Fixed maturities, available-for-sale	5,072	6,639
Fixed maturities, fair value option	2	6
Fixed maturities, fair value option	619	185
Mortgage loans	100	154
Partnerships	68	75
Payments for the purchase of:
Fixed maturities, available-for-sale	(5,105)	(5,874)
Equity securities, at fair value	(607)	(256)
Mortgage loans	(31)	(178)
Partnerships	(78)	(126)
Net proceeds from (payments for) derivatives	26	(189)
Net proceeds from (payments for) derivatives	(20)	(39)
Net proceeds from (payments for) short-term investments	82	(608)
Other investing activities, net	1	(31)
Net cash provided by (used for) investing activities	129	(242)
Financing Activities
Deposits and other additions to investment and universal life-type contracts		1,366
Withdrawals and other deductions from investment and universal life-type contracts	(24)	(7,670)
Net transfers from separate accounts related to investment and universal life-type contracts		5,918
Federal Home Loan Bank of Boston (FHLBB) advances	50	0
Repayments at maturity or settlement of consumer notes		(4)
Net increase (decrease) in securities loaned or sold under agreements to repurchase	102	(368)
Repayment of debt	(413)	(320)
Proceeds from the issuance of debt	0	(490)
Net issuance (return) of shares under incentive and stock compensation plans	(28)	1
Dividends paid on preferred stock	(6)
Dividends paid on common stock	(109)	(90)
Net cash used for financing activities	(428)	(677)
Foreign exchange rate effect on cash	3	(5)
Net decrease in cash, including cash classified as assets held for sale	(17)	(212)
Less: Net increase (decrease) in cash classified as assets held for sale	0	(260)
Net increase (decrease) in cash	(17)	48
Cash – beginning of period	121	180
Cash – end of period	104	228
Supplemental Disclosure of Cash Flow Information
Income tax received (paid)	0	(1)
Interest paid	$ 41	$ 65